Dobby lever



June 23, 1931. Y R. c. NEWTON DOBBY LEVER Filed July 3, 1950 Patented June 23,y 1931 UNITED srATss PATENTK orrlcs noBERT'c. NEWTON, or NEEDHAM, MASSACHUSETTS, ASsIGNoE. To n. 1r.itIvEnMoEEco., or ALLSTON, MASSACHUSETTS, A coaroEATToN 0E MASSACHUSETTS DOBBY LEVER Y Application filed July 3,

This invention relates to a dobby lever for use in loom dobbies.

Each loom dobby includes a considerable number of dobby levers positioned side by side and close together. Each dobby lever has a hook pivotally attached thereto at each end thereof, and as the space allowed in the dobby for both lever and hook is limited and and as both of these members, especially the hook, are subjected to constant and heavy strain, it is necessary that said hook be replaced frequently. l

The object therefore of this invention is to provide an improved dobby lever so constructed that if the hook requires replacing and it is necessary to detach said hool-r from said lever that this may be easily and quickly accomplished without dismantling the dobby.

The invention consists in a dobby lever as set forth in the following specification and particularly as pointed out in the claims thereof.

Referring to the drawings:

Fig., 1 represents a side elevation of av dobby lever embodying my invention, to

gether with certain portions of a loom har ness mechanism that Lare associated therewith.

Fig. 2 is an edge elevation of the dobbj,7 lever.

Fig. 3 is a side elevation of an end portion of a dobby lever, the reverse side being shown from that illustrated in Fig. 1.

Fig. 4 is an enlargeddetail sectional view` taken on the line 4-4 of Fig. 1.

Fig. 5 is an edge View of an end portion of a dobby lever illustrating a modified construction. l

Like numerals refer to like parts throughout the several views of the drawings.

In the drawings, referring particularly to Figs. 1 to 4 inclusive, 5 represents a portion of a harness lever and 6 is a dobby lever which is pivotally attached to the leve-r 5 at 7. Pivotally attached to the upper and lowei extremities of the lever 6 are dobby hooks 8 and 9 respectively, these hooks being of well-known construction. A. lifter rod l0 and the end portions of dobby lingers 11 and 1930. Serial No. 465,495.

12, all of well-known construction, are also illustrated, their operation being well known to those skilled in theart.

The lever 6 is constructed of two similar pieces of sheet metal 13 and 14 which are reversely positioned face to face and permanently secured together at 15 by rivets or any other suitable means. The sheet material of which the parts 13 and 14 are formed is preferably of a flexible character, either being constructed of resilient springk steel 'or of a soft cold rolled steel that may he flexed.

One end of each member -13 and 14 is oi"- set at 16, thereby providing a space 17 between said member at each end of thelayer 6 and in effect forming a bifurcated bearing portion at each end thereof between the furcations of which the hooks 8 and v9 are positioned. The `hooks 8 and 9 are each provided with oppositely projecting trunnions 18 and the offset end portion of the members 13 and 14 is slotted at 19 to receive one of the trunnions 18. The other end por.- tion offthe members 13 and 14 is slotted at QOto receive the other trunnion 18 and both t."

of these trunnions constitute for the dobby hooks. l

The end portion of the members 13V and 14 in whichfthe slot 2O is located is also pivot members slottedfatgQl to form a locking member 29., i the yend portion ofwhich projects into the slot 2O and isprovided with an arcuate extremity23 whichr bears against the'iperiphery of the trunnion 18 andholds the latter in said slot. p V

Only one locking member 22 is required at each end of the leverf to securely hold the dobby hoolrin position in the lever and when it is desired'to either attach a dobby hook to the lever 6 or. to detach said hook fromsaid lever allthat is necessary isrto bend or eXthe locking member 22,' as illustrated in dotted lines-in Fig. 2, and the trunnion portions 18 of the hook may be inserted orremoved from the slots 19 and 20.

lf the members 13 and 14 are constructed of resilient material, the lockingmember 22 will be forced outwardly against the tension of the material and after the hook has been removed from the endof the lever 6, ieuV the locking member will spring backwardly to its normal position. lf, however, the parts are constructed of soft cold rolled steel, the free end of the locking member 22 will be forced outwardly a suflicient amount to remove the dobby hoolr from the lever 6, after which it will be necessary to again force the locking lever back to its normal position. Both of the Kdobby hooks S and 9 are attached to and detachedv from the lever 6 in exactly the same manner and if either of these hooks are brel-:en and needto be replaced, or if it is necessary to replace the lever 6, the hooks may be disconnected from` the lever G without dismantling any other portion of the dobby.

In Fig. 5 I have illustrated a modified embodiment of my invention in wiich the opposite end portions of a dobby lever are constructed of two separate pieces of sheet metal'21l and 25, which may be either rivetet or welded together at 2G. The members 24 and 25 may be constructed either of resilient spring-steel or soft cold rolled steel in order that a 1rocking portion thereof may be bent or flexed, but instead of extending` the members 24 and 25 from one end the lever to the other, a separate intermediate portion 27 is provided which is prefe 'ably construetedas a forging and the members 2e and 25 are butt Welded to the member 27 upon-a dotted line that is illustrated at 28 thereby providing a dobby lever that is in eect a single piece. It is evident that several other methods of constructing the Vend portions of the lever 6 may be employed which will permitl metal hav-ing different characteristics to be utilized without departing from the spirit of this invention and which will fall within the scope of the appended claims.

I claim 1'. A dobby lever embodying` therein bifurcated end bearing portions, the furcations thereof being. provided with slots therein to receive' the pivot members of a dobby hook, said slots being open at an end thereof, and flexible means adapted to hold said pivot members in said slots. 1

2. A dobby lever embodying therein bifurcated end bearing portions, the furcations,

whereby` both of the pivot members are held in position in their respective slots.

4. A dobby lever embodying therein bifurcated end bearing portions, the furcations thereof being provided with slots therein to member therein, whereby both of the pivot a members arev heldin position in their respective slots.

5.' A dobby lever comprising similar members constructed of sheet metal fastened together face to face, each member being ofiset at one end thereof and co-operating with the end portion of the adjacent member-to form end bearing portions, both of the latter being provided with slots therein to receive the pivot membersof a dobby hook, and flexible means projecting into one of said slots and adapted tocontact, with the )ivot member therein, whereby both of'` the pivot members are held in positionin their respective slots.

In testimony whereof I have hereuntoyset my hand.

ROBERT C. NEVTON; 

